Grout for tiling (light grey) (Worthing BN11)

Half a 5kg bag of light grey grout. Opened a few weeks ago so should still be usable for a while, I think? (A quick search says it keeps okay for 6 months when opened, but I'm no expert.)

Ultracolor Silver Grey 111 Flexible 5kg - https://www.tilemountain.co.uk/ultracolor-silver-grey-111-flexible-5kg

Collect from East Worthing, thanks! Please let me know when you can collect it when you email (I'm flexible and can always leave it by the front door if I need to pop out.)